Rail Corrugation Occurrence Probability and Development Features Under Micro Creep Saturation of Metro Lines

被引：0

作者：

Wang Z. ^{[1
]}

Lei Z. ^{[1
]}

机构：

[1] Institute of Rail Transit, Tongji University, Shanghai

来源：

Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | 2024年 / 44卷 / 05期

关键词：

creep characteristics; metro line; micro contact; rail corrugation; wear;

D O I：

10.15918/j.tbit1001-0645.2023.121

中图分类号：

学科分类号：

摘要：

Focusing on the wheel-rail contact behavior, the occurrence probability and development characteristics of rail corrugation on metro lines were investigated from the micro perspective. Using the numerical model of vehicle-track multi-body dynamics, combined with the tangent contact algorithm Modified-Fastsim, a critical value of creepage saturation was proposed to analyze the occurrence probability of corrugation on the lines with different radii of curvature under conditions of smooth and rough rail surfaces. And the average wear depth of wheel-rail contact patch was calculated simultaneity with the Archard model, further more the evolution features of rail corrugation were analyzed. The results show that the inside and outside wheel-rail contact creepages all tend to be saturated when the curve radius of the line is less than 450 m, all having the corrugation possibility produced on the inner and outer rails. And when the curve radius of the line is more than 450 m, the occurrence probability of the rail corrugation can decrease. On the other hand, the irregularities of rail surface can lead to the feedback vibration in wheel-rail contact, enhancing the occurrence probability of rail corrugation in wheel-rail system. With the increase of the curve radius of the line, the average wear depth of wheel-rail contact patch tends to decrease, and the average wear depth decreases at a rate that increases first and then decreases, meaning that the smaller the curve radius is, the greater the wear degree of rail corrugation is and the faster the wear rate is. The average wear depths of inside and outside (left and right sides) contact patches are similar, and the average wear depth of the outside contact patch is slightly higher than that of the inner side on the small radius curve, demonstrating that the wear degrees and wear rates of inner and outer (left and right sides) rails are basically similar. However, considering the difference between the inside and outside wheel-rail contact geometries, the corrugation of outer rail tends to appear on the rail side, while the corrugation of the inner rail appears mainly on the rail top. © 2024 Beijing Institute of Technology. All rights reserved.

引用

页码：458 / 467

页数：9

共 35 条

[11] MATSUMOTO A, SATO Y, ONO H, Et al., Formation mechanism and countermeasures of rail corrugation on curved track, Wear, 253, 1-2, pp. 178-184, (2002)
[12] SUN Y Q, SIMSON S., Nonlinear three-dimensional wagon-track model for the investigation of rail corrugation initiation on curved track, Vehicle System Dynamics, 45, 2, (2007)
[13] SUN Y Q, SIMSON S., Wagon-track modelling and parametric study on rail corrugation initiation due to wheel stick-slip process on curved track, Wear, 265, 9 − 10, pp. 1193-1201, (2008)
[14] YAO Huiming, SHEN Gang, GAO Lijun, Formation mechanism of worn profile rail corrugation based on experimental verification, Journal of Tongji University (Natural Science Edition), 46, 10, pp. 1427-1432, (2018)
[15] FANG G, WANG Y R, PENG Z K, Et al., Theoretical investigation into the formation mechanism and mitigation measures of short pitch rail corrugation in resilient tracks of metros, Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 232, 9, pp. 2260-2271, (2018)
[16] WANG Y R, WU T X., The growth and mitigation of rail corrugation due to vibrational interference between moving wheels and resilient track, Vehicle System Dynamics, 58, 8, pp. 1257-1284, (2020)
[17] WANG Yurong, WU Tianxing, Effects of vibration wave reflections between wheels and tracks with high-elastic fasteners on short pitch rail corrugation, Journal of Vibration and Shock, 39, 6, pp. 29-36, (2020)
[18] LI Z L, DOLLEVOET R, MOLODOVA M, Et al., Squat growth-some observations and the validation of numerical predictions, Wear, 271, 1-2, pp. 148-157, (2011)
[19] RONG Jili, LI Xianhang, WANG Xi, Et al., Virtual research on durability of large special freight vehicle, Transactions of Beijing Institute of Technology, 42, 2, pp. 111-117, (2022)
[20] WANG Cheng, ZHONG Yanxu, WANG Wanli, Et al., Study on protective performance of three kinds of reinforced concrete anti-blast structures, Transactions of Beijing Institute of Technology, 42, 1, pp. 11-18, (2022)

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